atoms

1. Goal: What is an “atom”?
Do Now:
1. What are the three states of matter that exist
on Earth?
2. What would happen if we kept breaking
down a piece of paper?
Solid, liquid and gas
Eventually we would get to the smallest piece.

2. Part I- The Atom
- The atom is the smallest part of matter
- Atoms combine to form molecules

3. nucleus
-
-
electron
The Atom
Electron cloud or shell or
energy level

4. +
+
-
-
neutron
proton

5. *There are no + or – signs on the particles.
There are no lines for the energy levels.

7. Molecules- 2 or more atoms combine to form
molecules.
Water = H2O
1 Oxygen atom
2 Hydrogen atoms
Oxygen
H
H

8. Table
Salt
Sodium Chlorine
Compound
Element Element
Chemical
Change

9. Goal: To review the parts of an atom
Do Now:
1. Which subatomic particle is:
- negative –
- neutral –
- positive –
2. What is the center of the atom called?
electron
neutron
proton
The nucleus

10. - Read the article “The Atoms Family”
- Fill in the family album to the right of the
reading. 1) Include a picture of each
character’s face. 2) Include a description
of each character using clues from the
reading.
- Use clues from the story to help fill in the
map of Matterville (the map is on the back
of the worksheet) Use clues from the story
to help you.

11. Atoms remain “neutral” as long as the # of
protons equals the # of electrons.
2+ P
2- E
0

13. Goal: To review subatomic particles
Do Now:
1. Atoms combine to form ____________
2. All matter is made up of ___________
and __________________.
3. Where are electrons found?
molecules
atoms
molecules
Energy levels, electron cloud or shell

18. II- The atom and it’s subatomic parts
1. The number of protons is equal to the
number of electrons:
p = e
2. Each energy level can hold a certain # of
electrons:
Nucleus